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Assessment of metal contamination in soil and vegetation along the Arbutus Greenway in Vancouver, British Columbia
Plant and Soil ( IF 4.9 ) Pub Date : 2021-04-30 , DOI: 10.1007/s11104-021-04983-0
Lewis Fausak , Autumn D. Watkinson , Kimberley Dy , Les Lavkulich

Aims

The Arbutus Greenway is a former railway corridor and current greenspace spanning 9 km in Metro Vancouver, BC. The objective of this study was to quantify variability in metal concentrations along the greenway and assess barrier effectiveness on reducing atmospheric deposition of metals from nearby roads.

Methods

At 5 sites along the greenway, soils and vegetation were sampled; metal concentrations were determined by ICP-OES.

Results

We found high variability in naturally occurring soil metal concentrations. We were able to associate the values with site history as a railway transportation corridor. In addition, we found higher concentrations of total soil metals in areas without a barrier separating the greenway from the heavily trafficked roads, indicating that atmospheric deposition of metals from roadways is occurring. The use of barriers seemed to be effective in reducing atmospheric deposition of metals in our study.

Conclusions

These findings support our conclusion that a thorough and comprehensive assessment of potential greenspaces prior to the planning phase, and continued monitoring during use, will be important to maintain public health.



中文翻译:

评估不列颠哥伦比亚省温哥华市Arbutus Greenway沿线土壤和植被中的金属污染

目的

Arbutus Greenway是一条前铁路走廊,目前在不列颠哥伦比亚省大温哥华地区跨越9公里的绿地。这项研究的目的是量化沿途金属浓度的变化,并评估减少附近道路金属在大气中沉积的屏障有效性。

方法

在沿绿道的5个地点,对土壤和植被进行了采样。通过ICP-OES测定金属浓度。

结果

我们发现自然产生的土壤金属浓度存在高度变异性。我们能够将这些值与站点历史关联起来,作为铁路运输走廊。此外,我们发现在没有将绿道与人流量大的道路分隔开的障碍物的区域中,土壤金属的总浓度较高,这表明正在发生大气中道路金属的沉积。在我们的研究中,使用屏障似乎可以有效减少金属在大气中的沉积。

结论

这些发现支持了我们的结论,即在规划阶段之前对潜在的绿地进行全面而全面的评估,并在使用过程中进行持续监控,对于维持公共健康至关重要。

更新日期:2021-05-02
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